Estimating the greenback’s actual strength versus a trade-weighted basket of six crucial currencies, the US dollar index rallied 0.11% being worth 92.91.

Overnight, the greenback edged up versus a basket of key currencies because market participants were digesting Fed Chair Janet Yellen's comments reaffirming the major financial institution’s view that lifting interest rates gradually appears to be the most appropriate policy measure.

The currency pair EUR/USD went down as worries over the political fallout in Germany kept unrolling, putting pressure on the euro and pushing it to a one-month minimum.